August muller and josef wolf



Patented NOV.- 14, 1882.

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-NITED STATES AUGUST MULLER Am) Josnr WOLF, OF NEW YORK, N. Y.

LOCK-HINGE FOR SHUTTERS.

SPECIFICATION forming part of Letters Patent No. 267,448, dated November 14, 1882.

Application filed March 11, 1882. (No model.)

To all whom it may concern Be it known that we. AUGUST MiiLLER and JosEF WOLF, both of the city, county, and State of New York, have invented certain new and useful Improvements in Shutter-Hinges, of which the following is a specification.

Ourinvention relates to a nimproved shutterhinge, having the objectofkeeping the same automatically cl0sed,halt open,or entirely open, without having any catches or other devices fastened to the window-sill or the walls; and

it consists in the various devices herein described, and pointed out in the claim.

In the drawings, Figure 1 is a side elevation with part section of our improved automatic shutter-hinge, and Fig. 2 is a horizontal section of the same on line 00 m, Fig. 1.

Similar letters of reference indicate corresponding parts.

In the accompanying drawings, A is 2. casing, which is screwed to the frame of the window or other place, and provided at its outward end with short sockets B to support the pintle G, which is passed through the center of a socket, D, at the end of the shutter-strap E.

In the casingA slides-a bolt or follower, A, which is forced in outward direction by spiral springs a, interposed between the casing and the follower. The outer end of the follower A is made convex, and adapted to fit into the concave grooves of the.socket D, so as to engage and lock the shutter as soon as the socket is brought into such a position that the bolt A is opposite one of the concave grooves of the socket D. By adding more grooves to the latter the shutter can of course be held in as many more different angles of inclination to the window.

The casingA is provided with a fixed screw stop or pin, (1, which projects into atop or bottom recess, 1), of the follower A, so as to control the outward motion of the follower and prevent it being thrown out of the casing when the shutter is removed from its hinges.

Our improved automatic shutter-hinge can also be applied to doors, gates, 850. It is obvious that the hinge holds the shutter firmly in any desired position, preventing the mov:

ing of the same by wind or other agencies, and looking it entirely automatically without any other attachments to walls, sills, 850.

Having thus described our invention, we claim as new and desire to secure by Letters Patent- As an improvement in lock-hinges, the mechanism consistingof a supporting-casing provided with pintle-sockets, a follower with one end resting on springs, the other end made convex. to lit concave grooves of the strap, and havinga recess in one side, into which ascrewstop projects, so as to control the outward motion of the follower, and a strap with a pintlesocket and concave grooves at its pintle end, whereby the shutter may be automatically held in as many positions as there are concave grooves, substantially as described.

In testimony that we claim the foregoing as our invention we have signed our names in presence of two subscribing witnesses.

AUGUST MULLER.

JOSEF WOLF.

NVitnesses PAUL GoEPEL, CARL KARI. 

